The station panel LB-741 is equipped with a memory collecting the
measurement results from all of the sensors where each includes: date,
time and a measurement result. The type of data stored and time of
registry interval are programmed by a user.

A station's microprocessor can calculate any optional parameter
resulting i.e. from a statistical analysis of the samples from any
measurement (i.e. pressure change tendency, average direction, average
wind speed etc.), according to a client's detailed requirements. The
realization of such requirements is performed through preparation of an
adequate version of the internal panel software LB-741. The software is
loaded to a station’s controller without a need of disassembling it and
that is why it can be modified in an already existing station.

Data registered in the station’s panel can be read by the user using
a PC computer through a communication interface of the station’s panel.
There are few optional ways of realizing the communication interface
equipment:

RS-232C - for local connection up to 20 m distance
(standard equipment),

RS-485 (isolated) - to be connected by a symmetric screen cable
from 500 up to 1000 m distance (standard equipment),

GSM radio modem (g18 GPRS Motorola)
to be connected at any distance, in the scope of GSM network work
(standard equipment - ordered separately),

The user reads data from the station using a standard PC computer,
which for that purpose should be equipped with an adequate interface
device and software. In case of the transmissions through RS-485 (or a
fiber wire - optionally) a converter LB-486 is used as the interface
device. In case of
GSM radio transmission
- GSM radio modem (GPRS) serves as an interface device.

Special software, installed on the computer assures communication
with the station (or with any number of them), what allows on rewriting
the measurement results in a text format on to a PC computer’s HDD and
having the data processed and visualized adequately to the user's
requirements. There is a possibility of attaching the station to any
type of information system owned by the client or to internet (see demo
-
www.meteo.waw.pl).

The station’s panel LB-741 in its standard version can have a
built-in LCD screen 2x20 characters, which provides successionally
information concerning the status of the station's power supply and
shows the measurement results from all of the attached sensors as well
as communicates any possible errors.

The basic source of the power supply for the station LB-741 is the
network 230V/50Hz. There is a possibility of installing an accumulator
12V/4 Ah in the station panel and attaching an outside solar battery,
what allows on locating the stations in places where there is no
network power supply. When powered from the network 230V the station
sets on an internal heating system, when the temperature inside goes
below -15°C or if the device's relative humidity goes above 85%, what
allows on correct device work at different and changing environment
climate conditions.

The station LB-741 construction is module and easily configured
(expanded) depending on the client's requirements. The elements that
are easy to be configured according to the client's requirements are
among other: number and type of the measurement devices, station
internal software, type of the station’s power supply, interface
communication equipment realization, PC computer software for
visualization of the results, presence of a displaying module, presence
of GSM radio modem.

The station panel is built-in a cage made out of synthetic
materials. The panel can be installed in a closed room as well as in
the field meteorological stations. Panel installation in the open field
requires placing it in an additional metal casing assuring higher
resistance to climate conditions and protection against unauthorized
persons.

POWER SUPPLY

Scope of panel work temperatures

Class of resistance

Field meteorological station LB-741; meteorological station LB-741 is designed for current control of basic climate parameters such as: air temperature, air humidity, soil temperature, barometric pressure, wind speed, wind direction, atmospheric precipitation, sun radiation, surface humidity, water level in rivers, soil humidity, pollutants concentration in air and other parameters according to client requirements.